Mechanical movement



Patented June 10, 1947 MECHANICAL MOVEMENT Bill B. Murad and John S.Barbie, Cleveland, Ohio Application September 7, 1944, Serial No.553,056 1 claim. (o1. 'i4-57) This invention relates to hand tools andparticularly to small mechanical tools used for deburring roughlydrilled holes, reaming, screwing and similar operations Y The primaryobject of this invention is to provide a light weight portable devicewhich may be quickly and easily used to perform the operations above setforth.

Another object is to provide an article of the kind mentioned which maybe quickly and easily stamped out of sheet metal and which is economicalto assemble and manufacture.

A further object is to provide such device so that it may be used intight or cramped spaces.

These and other objects of the invention will become apparent from areading of the following specification and claim, together with theaccompanying drawing, in which like parts are referred to and indicatedby like reference characters and wherein:

Figure 1 is a side elevation of the tool with parts broken away to showconstruction;

Figure 2 are views of some of the special tools adaptable for use withthis instrument;

Figure 3 is a side elevation of amodied form of a rotating mechanismused in this device;

Figure 4 is a vertical cross-sectional View of the tool taken along theline and in the direction of the arrows 4 4 of the Figure 1; and

Figure 5 is a similar View taken along the line and in the direction ofthe arrows 5-5 of the Figure 1.

The instant invention consists broadly of a body or handle member, acylinder, a spindle, a screw means, and a trigger device. Each of theseelements will be described hereinafter.

The body or handle member I I is made of sheet metal and is formed toresemble and tthe hand like a pistol grip. It is hollow and thereforehas space for the other elements of the tool. The top part of the bodymember I I is rounded and forms a substantially cylindrical chamber.

Attached to the body member II, and extending forward of the cylindricalchamber is a cylinder I2. This cylinder I2 may be made as long asdesired but one about four inches long will suilice for ordinarypurposes.

In the forward part of the cylindrical chamber and immediately in backof the cylinder I2 there is mounted a simple roller bearing I3. In therear of the cylindrical chamber and aligned with the roller bearing I3there is mounted a thrust bearing I4. This may be, as is shown in thedrawing, a simple steel ball resting in a conical socket.

The screw member I 5 is a twisted strip of metal which has disks orroller portions on each end thereof which fit in and smoothly engage theaforesaid bearings I 3 and I4 so that the screw may easily be rotated inthe cylindrical chamber of the handle member.

Below the cylindrical chamber and ascending up from the bottom of thehandle member II, is the lever I9, This lis also referred to herein asthe arm member. The lower or fixed end of the lever I9 is pivoted on thepin 2l which projects through the sides of the body member II and issuitably peened or secured to prevent accidental removal. The upper ormovable end of the lever I9 has a slot 26 therein which engages andthrough which the screw I5 passes. The slot 26 has a shape substantiallythe same as the crosssection of the screw I5 and is of a size slightlylarger than the pertinent dimensions of the screw. The slot duringmovement substantially Aretains its position relative to the body memberI.I and therefore the movement thereof causes the screw I5 to rotate.

Inside the handle or body member II there is also mounted an expansionspring 22. One end, the xed end thereof, abuts the inside wall of thehandle member II and the other end fits into the hole 23 in the leverI9. The spring 22 tends to keep the lever I9 forward and to urge theslotted portion of the lever adjacent to the roller bearing I3.

The trigger member 24 ated by the fingers when the hand is squeezed. Itis pivoted in the handle member I I by the pin 21. Its arm portion 25engages the lever I9 and as the finger portion is closed and broughttoward the body member, the arm portion 25 moves the lever I9 backwardso that the slotted portion thereof is adjacent to the thrust bearingI4. Moving the trigger back and forth4 causes the lever I9 toreciprocate and the screw to rotate first in one direction and then inthe opposite direction.

The spindle member I6 is simply a short piece of solid rod which easilyfits into the cylinder I 2 and is rotatable therein. The inner end ofthe spindle is firmly attached to the screw I5 at the roller bearing I3.Its forward or open end projects outwardly of the cylinder I2 a shortdistance and has an axial socket I1 therein which receives and holds theshank 20 of the different tools or implements which may be used with thedevice. A small set screw I8 is mounted in the spindle and extendsthrough to the socket I1 to is designed to be operfacilitate theretention of the implement being used.

The implements usable with this tool are of many types. A few, for thepurpose of illustration, are shown in the drawing. They may be designedto de-bur roughly drilled holes in metal or wood, t ream holes inplastic or wood, to fit over and screw or unscrew nuts or bolts, and tot screw slots or heads for insertion or removal in wood, plasticmaterials or metal. Many other implements may be designed and used withthis tool.

It should be noted also simplicity and simple illustration, thepreferred form of the gun is shown with an oscillating lever` that forthe sake of I9 and a reversely rotatable screw I5. However,

the device may be simply and easily modified so that while the lever I9oscillates, the screw I5 may be made to rotate in one direction only.This may be easily done by substituting for the parallel threaded screwI5 a screw 15a which has crossed oppositely running spiralledgroovesvand providing it with a follower which engages the oppostelyrunning spiralled grooves alternately. Screws and followers of this typeare common and are well known in the art.

It will now be clear that there is provided a device which accomplishesthe objects heretofore set forth. While the invention has been disclosedin its preferred form, it is to be understood that the specic embodimentthereof as described and illustrated herein is not to be considered in alimited sense as there may be other forms or .4 modications of theinvention which should also be construed to come within the scope of theappended claim.

We claim:

A hand tool, comprising in combination, a body member made of sheetmetal bent to form a hollow handle and a cylinder integral therewith,the said handle having two pins extending between the walls thereof; aspindle member having an implement retaining means on one end and ascrew portion on the other end thereof, the said spindle member beingrotatably mounted in said cylinder; a. rst lever member pivotallymounted in the hollow handle on one of the said pins and beingengageable with the said screw portion; and a second lever member, madeof sheet metal bent kto form a trigger means, pivotally mounted on theother of the two pins and being engageable with the first lever memberin a manner whereby the spindle member may be rotated in the cylinder.

BILL B. MURAD. JOHN S. BARBIC.

REFERENCES CTED The following references are of record in the file ofthis patent:

n UNITED STATES PATENTS Number

